Double sheave wheel



G. W. CURTIS DOUBLE SHEAVE WHEEL Filed April 2, 1927 W w XN w m Nov. 12, 1929.

' wheels may be length of the Patented Nov. 1,2, 1929 GEORGE W. CURTIS, OI"` MILWAUKEE, WISCONSIN, ASSIGNOR TO THE TIMKEN Isie BEARING COMPANY, OF CANTON, OHIO, .A CORPORATION OF OHIOv DOUBLE sHEAvE WHEEL Application vfiled April '2,

My invention relates'to sheave wheels and placed in close proximity to each other on a shaft or pivot pin and mounted on roller bearings, in such a way that the over-all pivot member -may be kept down. Where roller bearings are used in sheave wheels it is necessary to maintain a supply of lubricant in the bearings; and constructions now commonly used, space the sheave wheels apart and u se lrather bulky closure devices. The present invention consists principally in a lubricant seal for the abutting hubsof double sheave wheels and the like that is simple and compact,y whereby thel placed in close proximity to each other and the over-all length of their pivot pin kept within reasonable limits. The invention further consists in the sheave wheel construction and in the parts and combinations and-arrangements of parts hereinafter described and claimed.

The accompanying drawing is a cross-sectional view of the hub portion of a double sheave wheel construction embodying my invention.

The drawing illustrates two sheave wheels 1 mounted on a pivot pin 2. In eachend of the hub 3 of each sheave wheel is the cup 4 or outer bearing member" of a roller bearing, said cups -abuttlng against anginternal rib 5 in thehu'b 3 of the wheel. The Vcooperating cones 6 or inner bearing members of said conical roller bearings are mounted on the pivot pin, conical rollers 7 being interposed between 'the cups and cones.v A sleeve 8 on each end portion of the pivot pin abuts against a bearing cone'6. and terposed between. said sleeves and nuts 10 mounted on the ends of the pivot pins. Frame members 11 are mountel on said sleeves.

The outer` end of the hub 3 of each sheave wheel 1 is closed by a ring 12 that is secured to the thevend of *he hub, as by countersunk screws 13. Lubricant passageways 14 extend through the hub of each wheel into the bore thereof to permit the entrance of lubricant into the bore for said roller bearings. Said 'of channel section shjms 9 are inv.

a pivot pin,

.1927. Serial No. 180.435.

l' passageways are preferably closed by plugs has'for its principal object a construction in 15 -which two or more sheave wheels may be meetingends of the sheave wheel hubs 3,-

the sheave wheels and the middle bearing cones 6 would have to be spaced apart considerably to permit installing said rings. The present invention dispenses with such independent closure members for the hubs of the two Wheels and permits the sheave wheels to be arranged very close together. The cones 6 of. the inner rollerv bearings may' abut against each other. Preferably the inner edge portion 16 of thej hb of each sheave wheel is rabbeted and in the annular recess is placed a leather ring17. Said leather ring is held in position by or strap of spring metal that encircles said ring. .v

The closure construction described permits ROLLER means of a split ring 18 the two wheels to rotate relative to each other and at-'the same time cant from the hubs of the sheave wheels;

thereby maintaining an adequate-supply ofl The seal l hubs are dispensed wit r What I claim is:

1; A sheave wheel construction comprising a pivot pin, a plurality'of thereon, the bores of adjacent wheels communicating5 tween said pivot y and an annular ring surrounding the abutting end portions of sheave wheels.' 2. A sheave wheel construction comprising la plurality of sheave wheels thereon, the'bores of adjacentwheels com; municating, roller bearings interposed between said pivot pin and said sheavev wheels, an annular ring-.surrounding the abutting end portions of sheave wheels and a strap of springlmetalencircling said ring, y v3. A sheave wheel construction comprising a' pivot pin, a pluralit of sheave wheels thereon, the boresvpof a jacent wheels comprevents escape of'lubri-l sheave wheels roller bearings interposed bepin and said'sheave wheels,`l`

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municating,"roller bearings interposed between saidipivot pinand said sheave wheels .andan annular ring of flexible material surv'each other, the

iuiicating, closures for the outer ends of said pose between said wheels and saidpivot pin, the adjacent edges of the hub portions of' said lao 4 portions of said sheave wheels.

rounding the abutting end portions of sheave wheels. y

4. A sheave wheel construction comprising a fpivot pin,a pair of sheave wheels thereon, the bores of adjacent wheels communicating,

roller bearings interposed between said pivot pin and said sheave wheels and an annular lea-ther ring surrounding the abutting end 5. A sheave vwheel construction comprising a pivot pin, a pair voi sheave wheels thereon,

the boresV of adjacent wheels communicating,r

ortions, conica-l roller bearings vinter-v wheels being rabbeted, and an annular.flex. ible rin vdisposedin the channel formed by said rab ets.

. rin rabets and a strap vof spring metal surrounding said annular ring.

' disposed in the channel formed by said 1o-agb.V -v

bets and a. strap of spring metal encircling thereon having hub portions in close prox- :hub v'pose ,between said wheels and said pivot pin, the adjacent edges' ofthe hub portions of said 7.A construction ofthe kind ,described comprising a pivot pin, wheel members there-- on having hub portions in close proximity to each other, the bores `ofjadja'ceiit.wheels commanica-ting, closures for the 'outer yends of Said ortions, conical roller bearings interwheels being rabbeted, an annular flexible disposed in the channel formed by said 8. `A construction of the kindI described comprising a pivot pin, wheel members thereon having hub portions in close proximity to eachother, the/bores of adjacent wheels com-I lmunicating, conical roller bearings inter-Y posed between said wheels and saidpivot pin,

the a ,'acent edges of the hubportionsof said w eels being rabbetd, an'ann'ular ring said annular. ring. 9. construction of the kind., described comprisingy a pivot pin, two'wheel members imity ftoeach other, the boes'of adjacent wheels communicating,conical roller bearings interposed between -said wheels and said pivot pm, the inner bea-rin members in themeet- 1n ends ofsaid whee s abuttiiiga 'nst each ot er, means for securing in position the inof said wheels beingrabbeted, an annular ring disposed in the channel formed by said rabbets and a .strap of spring metal encircling said annular ring.

10. A sheave wheel construction -comprising frame members, a pivot pin mounted in said frame members and projecting therebeyond at its ends, aplurality of sheavel wheels mounted on said pivot pin,.the hub portion of leach sheave. wheel having an annular ribl around the middle of its innerl periphery, conical bearingA cups in the bores of said sheave wheels seated against said ribs, bearing cones on said pivot pin and conical rollers interposed between 'said cups and cones, lock nutson the projecting ends of said pivot pin, spacer sleeves` on said pivot pin between the endmost bearingcones and said lock'nuts,

shims between said lock nuts and said sleeves, Y

the hubs of said sheave wheels having lubricant p assageways, adjacent edges of said hub portionsbeing rabbeted, an annular flexible ring disposed in the channel thus formed and i hub portions and enci sleeves.

11. :A sheave wheel construction'com/pris'f ing a pivot pin, a plurality of sheave wheels thereon, the bores of adjacent wheels coinmunicating, bearings interposed between said pivot pin and said sheave wheels-andan ane nular ring surrounding the abutting end poi'- tions of the sheave wheels.V

lclosure rings secured to the outer ends of said..

cling said spacer 712.' A construction of thev kind-'A described` comprisinga pivot pin, wheel members there- 'on having hub each other, the

portions in close proximity to' ores of adjacent wheels communicating, closures for the outer endsgof said hub portions,- bearings interposed between said wlieels and said pivot p'n, the adjacent ed es of the hub portions of. said wheels being rabbeted, an V annular flexible disposed in the channel formed by said iny said annular rin 'gned. at Milwau ee, Wisconsin,this 29th day of Marchf1927.

ring y ra ets and a strapof spring metal surround` Grondin w. CURTIS.'

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ner bearing members at the ends of said pivot I pin, the adjacent edges of the hub portions 

